As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN RT ENGINE ANTI-ICE IS TURNED ON, COWL VALVE OPEN LIGHT COMES ON, THEN AFTER A FEW SECONDS FLICKER BETWEEN BRIGHT TO DIM OR STEADY BRIGHT. THIS TAI INDICATES GREEN. PERFORMED GROUND VERIFICATION OPS TEST 30-21-00-710-801. ALL TESTS SUCCESSFUL. ACFT GOOD FOR CONTINUE SERVICE.